Improvement in boring-machines



ttiii irit @anni @mit Letters PatentNo. 110,530, dated December 27, 1870.

IMPROVEMENT I N BORING-MACHINES.

The Schedule referred to in these Letters Patent and making part of .the same.

To all whom it may concern:

Be it known that I, EDWARD J WORCESTER, of the city and county of Worcester and Commonwealth of Massachusetts, have inventedcertain new and 'useful Improvements in Hand-Boring Machines; and I d0 hereby declare that the following is a full, clear,

and exact description of the same, reference being had to the accompanying drawing forming a part ofthis specification, in Which- Figure 1 represents a side view of so much of a hand-boring machine as is necessary to illustrate my invention;

Figure 2 represents a planer top view on line AB, iig. l and n l Figure 3 represents a section on lineA C, g. 1.

To enable those skilled in the art to 'which my in-v vention belongs to make and use the same, I will proceed to describe the same more-in detail.

In the drawing- The part marked A is the base of the machine, to which the frame B, which supports the auger, is hinged, as indicated in the drawing, or otherwise, as may be preferred.

C C are the curved rests or supports,-havingrgrooves or slots a a, through which the ends b b of the rodD pass, washers c c being placed upon the ends of' rod D, between the curved supports C and the side-pieces of frame B, as indicated in the drawing.

One end of rod D has va right-hand screw-thread cut thereon and the other end has a left-hand screwthread out thereon to receive the nuts E E whichv have threads ont in them to fit the threads on the ends of rod D.

` Nuts E E have dat projections e e which t into the slots a a in the pieces C O, whereby nuts E E are kept Afrom turning.-

Upon the rod D is castor otherwise fastened a handpiece, F, which may be made in any desired forin and of any desired size.

Washers ff may be placed between the projections.

or hubs G G of the hand-piece Fand the sides of the frame B, if preferred. L

The operation is as follows:

When the' operator desires to move frame B, to give the auger or bit any desired angle,

he takes hold of' the-vhand-piece F and turns it so as to run the nuts E E off until frame Bis relieved so that it can be moved to Iany desired position, the ends b b of rod D and the projections c c of nuts E E sliding in the slots a a of the pieces O C.'

After the frame B has been moved to the desired posit-ion the operator turns the hand-piece F in a reversel direction, ends b bof rod D, whereby the curved side-pieces C C are forced against the sides of frame B with 'suoh force that'the parts are clamped Vsecurely together, the sides of the frame B being held lirm between'thc side-pieces G C and the shoulders or hubs Gr G on thehand-piece F.l

It will be seen that, by my improvements for-holding the frame B in any desired inclination, the adjustment can be made made with ease and in a very expeditious manner, since the operator 'does not necessarily have to take his hand off of the hand-piece F during the whole operation of adjusting the frame,

In lieu of the nuts E E, bolts with dat shoulders, to tthe grooves or slots a, may be employed in oombination with a hand-piece, F, only of suflicientleugth to t in between the side pieces of frame B, and have ing holesV bored in each end, with screw-threads toreceiveand lit the threads on the ends of the bolts, one of which bolts should have a right-hand and the other a left-hand thread out thereon. y Y

I prefer the arrangement shownin the drawing, however. j

Having described my .improved handboring machine, Y

What I claim therein as new and of my invention,

and desire to`secnre by Letters'Patent, is

The combination, with the frame o rupright B and the side-'pieces 0, of 'the rod D, provided at its end with right-and-left-hand screw-threads', the hand-piece F, and the nuts E tting in the slotted pieces Gand engaging with' the screw-threads with which the ends of rod D are provided, said parts being constructed.

and operating substantially as shown and set forth'.

EDWARD J. WORCESTER.

Witnesses: l

'.lnos. H. DODGE, GEO. H. MILLER.

and thus screws nuts E E onto the' 

